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Investment Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
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Amortized cost and fair value of debt securities |  |
Amortized Cost | $ 242,901 | $ 198,653
Gross Unrealized Gains | 2,045 | 1,678
Gross Unrealized Losses | 696 | 1,333
Fair value, Total | 244,250 | 198,998
Government sponsored enterprises |  |
Amortized cost and fair value of debt securities |  |
Amortized Cost | 87,618 | 57,002
Gross Unrealized Gains | 444 | 240
Gross Unrealized Losses | 12 | 143
Fair value, Total | 88,050 | 57,099
Asset-backed securities |  |
Amortized cost and fair value of debt securities |  |
Amortized Cost | 122,348 | 106,726
Gross Unrealized Gains | 1,046 | 855
Gross Unrealized Losses | 668 | 1,119
Fair value, Total | 122,726 | 106,462
Obligations of states and political subdivisions |  |
Amortized cost and fair value of debt securities |  |
Amortized Cost | 32,935 | 34,925
Gross Unrealized Gains | 555 | 583
Gross Unrealized Losses | 16 | 71
Fair value, Total | $ 33,474 | $ 35,437

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